You're very fast in answering :-)),
but that was not my mistake I think. I used an existing path like "C:\data\Me 2004_09_27_ 162434.xls" and while creating the config-file, I had selected first three channels.
I changed nothing but 0 to 1 and back, and with dialog everything works (without any changes, too), but without it doesn't. I also have searched my Drives for *.xls, but there are no matches.
Perhaps it may help you, if you take a look at my files. Tomorrow, I will upload them, and I would be very thankful if you will try to help me again.
Thank you so far,
Nico